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Tue, 28 Jul 2020 13:03:39 +0000 Received: from d06av22.portsmouth.uk.ibm.com (d06av22.portsmouth.uk.ibm.com [9.149.105.58]) by b06cxnps4074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 06SD3aIx30736744 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 28 Jul 2020 13:03:37 GMT Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D74654C050; Tue, 28 Jul 2020 13:03:36 +0000 (GMT) Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id BF24D4C046; Tue, 28 Jul 2020 13:03:34 +0000 (GMT) Received: from localhost.localdomain.com (unknown [9.79.208.115]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTP; Tue, 28 Jul 2020 13:03:34 +0000 (GMT) From: Balamuruhan S To: mpe@ellerman.id.au Subject: [PATCH v4 2/3] powerpc sstep: add support for divde[.] and divdeu[.] instructions Date: Tue, 28 Jul 2020 18:33:07 +0530 Message-Id: <20200728130308.1790982-3-bala24@linux.ibm.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200728130308.1790982-1-bala24@linux.ibm.com> References: <20200728130308.1790982-1-bala24@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235, 18.0.687 definitions=2020-07-28_07:2020-07-28, 2020-07-28 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 adultscore=0 lowpriorityscore=0 mlxscore=0 spamscore=0 clxscore=1015 malwarescore=0 suspectscore=1 priorityscore=1501 bulkscore=0 mlxlogscore=811 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2007280095 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: ravi.bangoria@linux.ibm.com, jniethe5@gmail.com, Balamuruhan S , paulus@samba.org, sandipan@linux.ibm.com, naveen.n.rao@linux.vnet.ibm.com, linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" This patch adds emulation support for divde, divdeu instructions, * Divide Doubleword Extended (divde[.]) * Divide Doubleword Extended Unsigned (divdeu[.]) Reviewed-by: Sandipan Das Signed-off-by: Balamuruhan S Acked-by: Naveen N. Rao --- arch/powerpc/lib/sstep.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c index c58ea9e787cb..caee8cc77e19 100644 --- a/arch/powerpc/lib/sstep.c +++ b/arch/powerpc/lib/sstep.c @@ -1806,7 +1806,18 @@ int analyse_instr(struct instruction_op *op, const struct pt_regs *regs, op->val = (int) regs->gpr[ra] / (int) regs->gpr[rb]; goto arith_done; - +#ifdef __powerpc64__ + case 425: /* divde[.] */ + asm volatile(PPC_DIVDE(%0, %1, %2) : + "=r" (op->val) : "r" (regs->gpr[ra]), + "r" (regs->gpr[rb])); + goto arith_done; + case 393: /* divdeu[.] */ + asm volatile(PPC_DIVDEU(%0, %1, %2) : + "=r" (op->val) : "r" (regs->gpr[ra]), + "r" (regs->gpr[rb])); + goto arith_done; +#endif case 755: /* darn */ if (!cpu_has_feature(CPU_FTR_ARCH_300)) return -1; -- 2.24.1